Etymology
1. Etymology tree
2. Proto-Indo-European *ḱlew-
3. Proto-Indo-European *-tós
4. Proto-Indo-European *ḱlutós
5. Proto-Germanic *hlūdaz
6. Proto-West Germanic *hlūd
7. Old English hlūd
8. Middle English loude, loud, lud
9. English loud
10. From Middle English loude, loud, lud, from Old English hlūd (“loud, noisy, sounding, sonorous”), from Proto-West Germanic *hlūd, from Proto-Germanic *hlūdaz, *hlūþaz (“heard”), from Proto-Indo-European *ḱlewtos (“heard, famous”), from Proto-Indo-European *ḱlew- (“to hear”). More at listen.
11. Cognates
12. Akin to Scots loud, lowd (“loud”), Swedish ljud, Danish, Norwegian Bokmål, and Norwegian Nynorsk lyd, Faroese ljóð, Icelandic hljóð, West Frisian lûd (“loud”), Dutch luid (“loud”), Low German lud (“loud”), German laut (“loud”), Irish clú (“repute”), Welsh clywed (“heard”), clod (“praise”), Latin laudare (“praise”), Tocharian A/B klots/klautso 'ear', klyostär 'heard', Ancient Greek κλυτός (klutós, “famous”), Albanian quaj (“to name, call”), shquar (“famous, notorious”), Old Armenian լու (lu, “the act of hearing”), Old Church Slavonic слава (slava, “glory”), слово (slovo, “word”), Sanskrit श्रव (śráva, “glory”). See: Dutch Adjectives '
luid', German Adjectives '
laut'.